Under normal circumstances, the injection molding machine may cause different levels of water in the electrical control box, such as electrical, machine hydraulic system and lubrication system. In this case, the following parts can be analyzed and processed:
Electrical control section
When the electrical part enters the water, it will cause rust corrosion and various insulation properties of various electrical components. Generally deal with the following steps:
1. Disconnect all power sources;
2. In the shortest time after entering the water, remove the battery above the I/O computer motherboard (recommended for timely operation), because the I/O board is still powered when the battery is not removed. This will accelerate the rust and corrosion of these components, which will increase the difficulty of repairing components and maintenance costs;
3. Remove the electrical components in the entire point box (operating staff) and clean them with alcohol. If necessary, disassemble and clean the parts, including I/O board, 24V power supply, 5V power supply, transformer, AC contactor, air switch, Axial flow fan, etc.
4. Dry, use the on-site drying hopper to fully dry all the components, and then disassemble and clean the components into the drying hopper. The drying temperature is 50~70°C, the drying time is 8~10 hours, and the insulation resistance value is tested. Whether it meets the requirements (usually measured in 200K file) to determine whether it is completely dry;
5, the complete dry electrical components are separately energized and inspected (service personnel), after the inspection is completed, the machine can be installed.
Hydraulic part
1. The motor oil pump cannot be turned on, because the moisture entering the hydraulic oil after the motor is turned on may enter the hydraulic piping system of the machine, causing the metal hydraulic components to rust;
2. Check if the hydraulic oil is in the water. Open the plug at the bottom of the tank on the rack, release a small amount of oil, and ignite with a little bit of paper. If there is a sizzling sound during the burning process, it means there is moisture in the hydraulic oil and all hydraulic oil needs to be replaced. (It can also be tested with anhydrous copper sulfate to turn blue, and blue to indicate water content);
3. If the oil contains water, you need to replace the hydraulic oil in the tank. Wipe the tank with a clean cloth before changing the oil.
other parts
1. The motor separates the stator and rotor of the motor, and the stator windings are dried (can be professionally repaired by the motor, or can be dried in a motor housing with a 100W incandescent lamp for about 8 hours). The insulation resistance must be ≥ 0.4. MΩ, the motor bearing is removed and cleaned after being cleaned with gasoline, and the bearing of the same specification is replaced;
2. The lubrication pump will separate the rotor, stator and pump of the lubrication pump motor. The set winding can be dried by the drying hopper. The insulation resistance must be ≥0.4MΩ. If the pump is rusted, it can be sprayed with the mold rust remover. The rust is removed from the pump, and the gears in the pump are flexible.
3, split model (UN320 and above models) must be separated from the connector plug, connector socket (aviation plug), after drying and drying (can be used hair dryer).
Servo motor and control system
1. The electrical components and circuit board are first cleaned with alcohol, dried with air, and then dried in an oven or drying hopper at 55 ° C for 24 hours.
2. The servo motor pays attention to the drying of the encoder and the motor stator and the protection of the motor bearing to avoid rust.
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